Jesus christ. If you can manage to not get ripped off in the real world, logic dictates that you should be fine on the internet.
Handy hints; don't use western union for cash transfer, don't buy dodgy stuff like viagra (go to a doctor you flaccid imbeciles), don't submit a form with personal details if you are a paranoid conspiracy theorist / paedophile hiding behind a proxy.
Any woman that doesn't know you but for some reason wants to fuck you is actually a greasy man with something to sell, or a couple of kilobytes of script.
No, you can't enlarge your penis with pills. If your dick is dwarfed by a bee, learn to give head properly so you've got at least something to offer.
Don't download child porn. Weirdos.
Don't trust Nigerians or Russians.
Don't expose yourself on camera in exchange for anything. 99 times out of a 100 it's 4chan, and they'll give you nothing but a year of hell.
Nutmeg won't get you high.
You can't make bombs out of dynamic lifter
And finally, never, ever pay for porn.
These are things that should be common fucking knowledge. Study it, know it well and your trip through the interbutt will be a pleasant one.
Take care of yourself, and each other. Goodnight..